Operator`s manual
RANE SL3 FOR SERATO SCRATCH LIVE • OPERATOR’S MANUAL 2.5.0
32
Additional 
Setup
This section covers general preferences 
and adjustments you can make to improve 
the performance of Scratch Live. From the 
top of the main screen, click on SETUP to 
get to this area.
Hardware
USB Buffer Size (Latency)
Scratch Live processes audio in small 
chunks. When smaller chunks are 
used, the movement of the record is 
translated into audio more often, which 
results in a lower overall system latency. 
However, this requires more processing 
and therefore a higher CPU load, so 
lower buffer size settings require a 
more powerful computer to produce 
uninterrupted audio. If you want tighter 
control, try decreasing this setting. On 
the other hand, if you experience audio 
dropouts, you need to increase this 
setting (or use a more powerful computer).
Updating Firmware 
If a rmware update is available after 
installing a new Scratch Live software 
release, an Update Firmware button 
appears in the Hardware screen.
  The rmware upgrade takes 
approximately 10 seconds, during which 
time the SL3 will not be usable.
Line / Phono Status
The input level currently set on the SL3 is 
displayed for each input. To change the 
input level setting, use the dip switches on 
the SL3. Choose up for Phono and down 
for Line.
  When Phono is selected, the Phono 
Sensitivity setting is also displayed. Set 
the Phono Sensitivity to the same level 
of your cartridge (see your cartridge 
documentation for the correct value).
Recording Bit Depth
Choose to record in either 16-Bit (CD 
quality, smaller le size) or 24-Bit (high 
quality, larger le size). See “Recording” 
on page 29.
Playback
Track End Warning
Enable this option to ash the Virtual Deck 
as you approach the end of the track. 
The label will start ashing 20 seconds 
from the end of the record. The Track 
end warning does not apply to any tracks 
under 1 minute long.
Playback Keys Use Shift
When this option is checked you must 
have the shift key pressed for the 
playback keys to trigger. This applies to all 
keyboard shortcuts, including cue points, 
INT mode shortcuts, and the sample 
player shortcuts.
TIP: You can also turn on Caps Lock 
instead of using Shift.
Lock Playing Deck
Every DJ’s nightmare used to be lifting 
the needle off the wrong turntable in the 
middle of a set. This setting helps to avoid 
the digital equivalent; loading a new track 
to the wrong deck. When this option is 
checked, you can only load a track if the 
target deck is stopped.
Sort Cues Chronologically
The ve cue points can be placed in any 
order, and can be dragged up and down if 
you wish to reorder them. If you prefer to 
lock them to chronological order, turn this 
option on.
Enable Hot Cues
When Hot Cues are enabled, you can set 
cue points simply by pressing the number 
keys 1 through 0 (no ctrl modier required) 
from your keyboard. You can only add 
cues this way if the cue point slots are 
empty. See “Cue Points” on page 18.










